AP7346D-2833FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7346D-2833FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for dual-output power management applications. This device provides positive fixed outputs at 2.8V and 3.3V with 130mA per channel, housed in a 6-pin X2-DFN1212-6 surface mount package. The part is classified as Last Time Buy, indicating limited availability and the necessity to identify equivalent or substitute components for ongoing design requirements and production continuity.

Substiute Parts

AP7346D-2833FS6-7

Diodes IncorporatedIn Stock: 6046AP7346D-2833FS6-7 Datasheet

Current PartRFQ

AP7345D-2833RH4-7

Diodes IncorporatedIn Stock: 1147AP7345D-2833RH4-7 Datasheet

MFR RecommendedRFQ

AP7346D-3328FS6-7

Diodes IncorporatedIn Stock: 11086AP7346D-3328FS6-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP7346D-2833FS6-7 are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Output voltage configuration (2.8V and 3.3V fixed outputs)
• Positive output polarity
• Dual regulator architecture
• Maximum input voltage (5.25V)
• Operating temperature range (-40°C ~ 85°C)
• Surface mount technology
• RoHS3 compliance

Substitution Categories:

MFR Recommended Substitute: AP7345D-2833RH4-7 maintains identical output voltages (2.8V, 3.3V) and input specifications but provides higher output current capability (300mA per channel versus 130mA) in an 8-pin X2-DFN1612-8 package. This part is Active status, ensuring long-term availability. The increased current capacity and enhanced protection features (Short Circuit protection in addition to Over Current) make this suitable for applications requiring higher current delivery or improved thermal performance.

Parametric Equivalent: AP7346D-3328FS6-7 shares the identical package (6-XFDFN Exposed Pad), pinout, and electrical specifications as the main part, with the distinction of different output voltage configuration (3.3V and 2.8V ordering). This part maintains 130mA per channel output current and is functionally interchangeable at the board level when output voltage ordering is not critical to circuit design.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Package, Same Pinout): The AP7346D-3328FS6-7 is the parametric equivalent suitable for direct board-level substitution. Both parts use the 6-XFDFN Exposed Pad package with identical pinout and electrical performance at 130mA per channel. Selection between these parts depends on output voltage ordering requirements in the specific application circuit.

For Enhanced Performance and Long-Term Availability: The AP7345D-2833RH4-7 is the manufacturer-recommended substitute, classified as Active status, ensuring continued availability for future production runs. This part delivers 300mA per channel output current, providing 2.3x current capacity improvement over the main part. The 8-pin package requires PCB layout modification but offers superior thermal performance and additional protection features (Short Circuit protection). This substitute is appropriate for applications where current headroom, thermal margin, or enhanced protection are design priorities.

Compliance Considerations: All three parts maintain ROHS3 compliance and identical regulatory certifications (REACH Unaffected, ECCN EAR99, HTSUS 8542.39.0001), ensuring no compliance impact during substitution.

Frequently Asked Questions (FAQ)

Q: Can AP7346D-3328FS6-7 be used as a direct replacement for AP7346D-2833FS6-7? A: Yes, for applications where output voltage ordering is not critical. Both parts are housed in the 6-XFDFN Exposed Pad package with identical pinout, quiescent current (100 µA), and output current capability (130mA per channel). The primary difference is the output voltage sequence (2.8V/3.3V versus 3.3V/2.8V), which may require circuit verification depending on pin assignment in the original design.

Q: What are the package differences between the main part and AP7345D-2833RH4-7? A: The main part uses a 6-pin X2-DFN1212-6 package, while AP7345D-2833RH4-7 uses an 8-pin X2-DFN1612-8 package. The larger package accommodates additional control features (Current Limit) and improved thermal characteristics. PCB layout redesign is required for this substitution, but the increased package size provides better heat dissipation for higher current applications.

Q: Is AP7345D-2833RH4-7 backward compatible with AP7346D-2833FS6-7? A: Functional compatibility exists for applications requiring 2.8V and 3.3V outputs with identical input voltage specifications. However, pinout differences necessitate circuit board redesign. The AP7345D-2833RH4-7 provides higher current capacity (300mA versus 130mA per channel) and additional protection features, making it suitable for applications with higher current demands or thermal constraints.

Q: Why is AP7346D-2833FS6-7 classified as Last Time Buy? A: Last Time Buy status indicates the manufacturer has discontinued active production. Existing inventory remains available, but no future manufacturing is planned. Designers should transition to active alternatives such as AP7345D-2833RH4-7 for new designs or long-term production requirements.

Q: Are all substitute parts RoHS3 compliant? A: Yes. AP7346D-2833FS6-7, AP7345D-2833RH4-7, and AP7346D-3328FS6-7 are all ROHS3 compliant with identical regulatory status (REACH Unaffected, ECCN EAR99).

Q: What is the impact of higher quiescent current in AP7345D-2833RH4-7? A: The AP7345D-2833RH4-7 has quiescent current of 140 µA compared to 100 µA in the main part, representing a 40 µA increase. This difference is negligible in most applications but should be considered in ultra-low-power designs where every microampere of standby current is critical.